Guess that just goes to show you what competition will do in a space. If it took a few days of work, why didn't you do it before since you considered it "for months"? Oh wait, you waited until someone else did it and then decided to try it out. Well, guess the competition will help create some innovation in the space. Good for everyone in the end since I'm hoping the Twitpay team out executes.
Tipjoy is about more than payments in twitter. The main reason I'm excited about this is what it allows for services that use twitter, like http://www.stocktwits.com/